An easy-to-assemble off-axis three-mirror system

Abstract

The utility model relates to the technical field of optical detection, and discloses an off-axis three-mirror system that is easy to assemble, including a frame, wherein the lower part of the frame is evenly provided with Forma wheels, a primary mirror frame is fixedly connected to the upper left side of the inner wall of the frame, a primary mirror lens is fixedly connected to the inside of the primary mirror frame by glue injection, a primary mirror gasket is arranged on the outside of the primary mirror lens, a secondary mirror frame is fixedly connected to the middle right side of the inner wall of the frame, a secondary mirror lens is fixedly connected to the inside of the secondary mirror frame by glue injection, and glue injection holes are provided on both sides of the secondary mirror frame, a three-mirror assembly is arranged on the left side of the lower part of the frame, and a refractive assembly is arranged on the lower right side of the inner wall of the frame. In the utility model, through the cooperation between the Forma wheels, the primary mirror frame, the primary mirror lens, the primary mirror gasket, the secondary mirror frame, the three-mirror gasket and the folding mirror frame and other structures, the off-axis three-mirror system is easy to assemble, and the practicality of the off-axis three-mirror system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical detection, in particular to an off-axis three-mirror system which is easy to assemble. Background Art

[0002] The off-axis three-mirror system is a complex and advanced design form in the field of telescope optical design. It is usually used in astronomical telescopes with large aperture and high performance requirements. This design adopts an off-axis mirror arrangement to avoid some optical problems, such as central obstruction and the effects of diffraction.

[0003] In the prior art, the off-axis three-mirror system is relatively large in size and has many parts, which makes it difficult to assemble and has low practicality. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an off-axis three-mirror system that is easy to assemble, aiming to improve the problems of the off-axis three-mirror system in the prior art that is large in size, has many parts, is difficult to assemble, and has low practicality.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an off-axis three-mirror system that is easy to assemble, comprising a frame, wherein the lower part of the frame is evenly provided with Forma wheels, a main mirror frame is fixedly connected to the upper left side of the inner wall of the frame, a main mirror lens is fixedly connected to the inside of the main mirror frame by glue injection, a main mirror gasket is arranged on the outside of the main mirror lens, a secondary mirror frame is fixedly connected to the middle part of the right side of the inner wall of the frame, a secondary mirror lens is fixedly connected to the inside of the secondary mirror frame by glue injection, glue injection holes are opened on both sides of the secondary mirror frame, a three-mirror assembly is arranged on the left side of the lower part of the frame, and a refractive assembly is arranged on the lower right side of the inner wall of the frame.

[0006] As a further description of the above technical solution:

[0007] The three-mirror assembly includes a three-mirror frame, a three-mirror lens and a three-mirror gasket. The three-mirror frame is fixedly connected to the lower left side of the inner wall of the frame. The three-mirror lens is fixedly connected to the inside of the three-mirror lens by glue injection, and the three-mirror gasket is arranged on the outside of the three-mirror lens.

[0008] As a further description of the above technical solution:

[0009] The refractive assembly includes a folding mirror frame, a folding mirror lens and a folding mirror gasket. The folding mirror frame is fixedly connected to the lower right part of the inner wall of the frame. The folding mirror lens is fixedly connected to the inside of the folding mirror lens by glue injection. The folding mirror gasket is arranged on the outside of the folding mirror lens.

[0010] As a further description of the above technical solution:

[0011] The upper part of the frame is evenly and fixedly connected with lifting rings around it, and the frame is fixedly connected to the optical detection platform through a Forma wheel.

[0012] As a further description of the above technical solution:

[0013] Glue injection holes are provided on both sides of the main mirror frame.

[0014] As a further description of the above technical solution:

[0015] Glue injection holes are provided on both sides of the three-mirror frame.

[0016] As a further description of the above technical solution:

[0017] Glue injection holes are provided on both sides of the folding mirror frame.

[0018] The utility model has the following beneficial effects:

[0019] In the utility model, the off-axis three-mirror system is easy to assemble through the coordination among the structures such as the Forma wheel, the main mirror frame, the main mirror lens, the main mirror gasket, the secondary mirror frame, the three-mirror gasket and the folding mirror frame, thereby improving the practicality of the off-axis three-mirror system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of an off-axis three-mirror system that is easy to assemble proposed by the utility model;

[0021] Figure 2 This is a structural diagram of an off-axis three-mirror system that is easy to assemble proposed by the utility model;

[0022] Figure 3 The utility model provides a schematic diagram of dispensing glue on the secondary mirror of an off-axis three-mirror system which is easy to assemble.

[0023] Legend:

[0024] 1. Frame; 2. Forma wheel; 3. Lifting ring; 4. Primary mirror frame; 5. Primary mirror lens; 6. Primary mirror gasket; 7. Secondary mirror frame; 8. Secondary mirror lens; 9. Third mirror frame; 10. Third mirror lens; 11. Third mirror gasket; 12. Folding mirror frame; 13. Folding mirror lens; 14. Folding mirror gasket; 15. Glue injection hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1-3 The utility model provides an embodiment: an off-axis three-mirror system that is easy to assemble, comprising a frame 1, a primary mirror frame 4 is fixedly connected to the upper left side of the inner wall of the frame 1, glue injection holes 15 are opened on both sides of the primary mirror frame 4, a primary mirror lens 5 is fixedly connected to the inside of the primary mirror frame 4 by glue injection, a primary mirror gasket 6 is arranged on the outside of the primary mirror lens 5, a secondary mirror frame 7 is fixedly connected to the middle right side of the inner wall of the frame 1, a secondary mirror lens 8 is fixedly connected to the inside of the secondary mirror frame 7 by glue injection, and a secondary mirror lens 8 is fixedly connected to the inside of the secondary mirror frame 7 by glue injection. Glue injection holes 15 are provided on both sides of the mirror frame 7, a three-mirror assembly is arranged on the left side of the lower part of the frame 1, and a refractive assembly is arranged on the lower right side of the inner wall of the frame 1. The three-mirror assembly includes a three-mirror frame 9, a three-mirror lens 10 and a three-mirror gasket 11. The three-mirror frame 9 is fixedly connected to the lower left side of the inner wall of the frame 1, and the three-mirror lens 10 is fixedly connected to the inside of the three-mirror lens 10 by glue injection. The three-mirror gasket 11 is arranged on the outside of the three-mirror lens 10, and glue injection holes 15 are provided on both sides of the three-mirror frame 9.

[0027] First, the primary mirror lens 5 is re-inspected and cleaned and then installed into the cleaned primary mirror frame 4, and the gap between the primary mirror lens 5 and the primary mirror frame 4 is determined by a feeler gauge. After meeting the standard, glue is injected and cured through the glue injection hole 15. Then, the secondary mirror lens 8 is re-inspected and cleaned and then installed into the cleaned secondary mirror frame 7. The secondary mirror lens 8 is adjusted to be concentric with the secondary mirror frame 7 by a feeler gauge. After meeting the standard, glue is injected and cured through the glue injection hole 15. Then, the triple mirror lens 10 is re-inspected and cleaned and then installed into the cleaned triple mirror frame 9. The gap between the triple mirror lens 10 and the triple mirror frame 9 is determined by a feeler gauge. After meeting the standard, glue is injected and cured through the glue injection hole 15. Subsequent component installations are all based on the primary mirror assembly. Then, the triple mirror assembly is installed on the frame 1. According to the CGH test results, the triple mirror gasket 11 is polished to determine the position of the triple mirror. Then, the secondary mirror assembly is installed on the frame 1. According to the interferometer test results, the position of the secondary mirror is determined.

[0028] Reference Figure 1-2, the lower part of the frame 1 is evenly arranged with Forma wheels 2, the upper part of the frame 1 is evenly fixedly connected with lifting rings 3, the frame 1 is fixedly connected to the optical detection platform through the Forma wheels 2, the refractive assembly includes a folding mirror frame 12, a folding mirror lens 13 and a folding mirror gasket 14, the folding mirror frame 12 is fixedly connected to the lower right part of the inner wall of the frame 1, the folding mirror lens 13 is fixedly connected to the inside of the folding mirror lens 13 by glue injection, the folding mirror gasket 14 is arranged on the outside of the folding mirror lens 13, and glue injection holes 15 are opened on both sides of the folding mirror frame 12.

[0029] The frame 1 is hoisted and moved by the hoisting ring 3, the Formazan wheel 2 is installed on the frame 1, the Formazan wheel 2 is adjusted to fix the frame 1 horizontally on the optical inspection platform, the main mirror assembly is fixed on the frame 1, the folding mirror lens 13 is re-inspected and cleaned and then installed into the cleaned folding mirror frame 12, the gap between the folding mirror lens 13 and the folding mirror frame 12 is determined by a feeler gauge, and after meeting the standard, the glue is injected and cured through the glue injection hole 15, thereby completing the independent assembly of the primary mirror, secondary mirror, tertiary mirror and folding mirror, and the position of the folding mirror lens 13 is determined by fixing the focal plane position and grinding the folding mirror gasket 14.

[0030] Working principle: First, install the main mirror lens 5 into the cleaned main mirror frame 4 after re-inspection and cleaning, and use a feeler gauge to determine the gap between the main mirror lens 5 and the main mirror frame 4. After meeting the standard, glue is injected and cured through the glue injection hole 15. Then, install the secondary mirror lens 8 into the cleaned secondary mirror frame 7 after re-inspection and cleaning, and adjust the secondary mirror lens 8 to be concentric with the secondary mirror frame 7 through a feeler gauge. After meeting the standard, glue is injected and cured through the glue injection hole 15. Then, install the three-mirror lens 10 into the cleaned three-mirror frame 9 after re-inspection and cleaning, and determine the gap between the three-mirror lens 10 and the three-mirror frame 9 through a feeler gauge. After meeting the standard, glue is injected and cured through the glue injection hole 15. Finally, install the folding mirror lens 13 into the cleaned folding mirror frame 12 after re-inspection and cleaning, and use a feeler gauge to determine the gap between the folding mirror lens 13 and the folding mirror lens The gap of the frame 12 is met, and the glue is injected and cured through the glue injection hole 15 after it meets the standard, so as to complete the independent assembly of the primary mirror, secondary mirror, third mirror and folding mirror. When the off-axis three-mirror system needs to be assembled, first install the Formazan wheel 2 on the frame 1, adjust the Formazan wheel 2 to fix the frame 1 horizontally on the optical detection platform, fix the primary mirror assembly on the frame 1, and the subsequent assembly installation is based on the primary mirror assembly. Then, install the three-mirror assembly on the frame 1, grind the three-mirror gasket 11 according to the CGH test result, determine the position of the three mirrors, and then install the secondary mirror assembly on the frame 1, determine the position of the secondary mirror according to the interferometer test result, fix the focal plane position, grind the folding mirror gasket 14, determine the position of the folding mirror lens 13, and finally install the cover to complete the installation of the off-axis three-mirror system.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An off-axis three-mirror system that is easy to assemble, comprising a frame (1), characterized in that: The frame (1) is evenly provided with forma wheels (2) around the lower part, a primary mirror frame (4) is fixedly connected to the upper left side of the inner wall of the frame (1), a primary mirror lens (5) is fixedly connected to the inside of the primary mirror frame (4) by means of glue injection, a primary mirror gasket (6) is arranged outside the primary mirror lens (5), a secondary mirror frame (7) is fixedly connected to the middle right side of the inner wall of the frame (1), a secondary mirror lens (8) is fixedly connected to the inside of the secondary mirror frame (7) by means of glue injection, and glue injection holes (15) are provided on both sides of the secondary mirror frame (7), a three-mirror assembly is arranged on the left side of the lower part of the frame (1), and a refractive assembly is arranged on the lower right side of the inner wall of the frame (1).

2. The off-axis three-mirror system that is easy to assemble according to claim 1, characterized in that: The three-mirror assembly comprises a three-mirror frame (9), a three-mirror lens (10) and a three-mirror gasket (11); the three-mirror frame (9) is fixedly connected to the lower left side of the inner wall of the frame (1); the interior of the three-mirror lens (10) is fixedly connected to the three-mirror lens (10) by glue injection; and the three-mirror gasket (11) is arranged on the outside of the three-mirror lens (10).

3. The off-axis three-mirror system that is easy to assemble according to claim 1, characterized in that: The refractive assembly comprises a folding mirror frame (12), a folding mirror lens (13) and a folding mirror gasket (14); the folding mirror frame (12) is fixedly connected to the lower right side of the inner wall of the frame (1); the folding mirror lens (13) is fixedly connected to the inside of the folding mirror lens (13) by glue injection; and the folding mirror gasket (14) is arranged on the outside of the folding mirror lens (13).

4. The off-axis three-mirror system that is easy to assemble according to claim 1, characterized in that: Lifting rings (3) are evenly and fixedly connected to the upper periphery of the frame (1), and the frame (1) is fixedly connected to the optical detection platform via a Forma wheel (2).

5. The off-axis three-mirror system that is easy to assemble according to claim 1, characterized in that: Glue injection holes (15) are provided on both sides of the main mirror frame (4).

6. The off-axis three-mirror system that is easy to assemble according to claim 2, characterized in that: Glue injection holes (15) are provided on both sides of the three-mirror frame (9).

7. The off-axis three-mirror system that is easy to assemble according to claim 3, characterized in that: Glue injection holes (15) are provided on both sides of the folding mirror frame (12).

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